Adam Clarke on Romans 8:37

Nay - as the prophet adds in the same place, all this is come upon us, yet have we not forgotten thee, nor dealt falsely in thy covenant, Rom 8:17, Rom 8:18, so all these things may happen unto us; but in all these things we are more than conquerors; We abide faithful in the new covenant of our God; and He is faithful who has promised to support and make us more than conquerors; i.e. to give us a complete triumph over sin, and death, and hell, not leaving one enemy unsubdued.